Arthur mikeault



(No Model.;

' A. MIREAULT.

NUT 00K.

I! Patented Aug. 17,1897,

Wzzz'Sses tion will be fully understood from the followers ectivc view )artl Y in section of the pawl-washer to release the nut.

.rrrnn'r :rricn.

ARTHUR'MIREAULT, OF FORT "WILLIAM, CANADA.

Nor-noon.

SPECIFICATION forming part of Letters Patent No. 588,346, dated August 17, 1897.

Application filed December 1, 1896. Serial No. 614,059. .No model.)

To aZZ whom it may concern:

Be it known that I, ARTHUR hlIREAULT, a subject of the Queen of GreatiBritain, residing at Fort Villiam, in theltrovince of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Nut-Locks and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in that class of nut-locks which comprise, in con- :;(5Ctl0l1 with a threaded bolt, a cup fixed against rotation on the belt, a spring arranged in said cub, a washer connected with the cup in such a manner as to prevent it from rotating independently of the same, and a nut having ratchet -serrations engaging similar serrations on the outer side of the washer.

The novelty and advantages of my invening description and claim when taken in conjunction with the annexed drawings, in which Figure 1 is a transverse section illustrating a bolt and nut equipped with my improvements as connecting a railway-rail and fishplatcs on opposite sides of the same. Fig. 2 is a perspective view of the bolt. Fig. 3 is a springinclosing annulus. Fig. & is a pcrspective view of the spring. Fig. 5 is a perspective View of the pawl-washer. Fig. 0 is a perspective view oi". the nut, and Fig. 7 is a perspective view of the implement designed to be interposed between the nut and the In the said drawings similar letters dcsig nate correspondingparts in all of the several views, referring to which A indicates a railway-rail having a transverse aperture d in its web.

B indicates fish-plates which have apertu res Z), registering with those of the rail, and U indicatcs the threaded belt, which ertonds through the apertures ot' the rail and plates and provided in its shank with the diametrically opposite longitudiind grOOYcsn, as shown. (in this bolt, adjacent to one of the ish-plates, is arrangiad the annulus l), which ms the projections d, entering the grooves e i' the bolt, and is pro itl wit h the nmrgiini flange c, in which diametrically opposite notchesj are formed for a purpose presently described.

E indicates the coiled spring, which su'rrounds the shank of the bolt and is arranged within the flange c of the annulus D, and F indicates what I will for convenience of description term the pawl-washer. This .washer F ms the outwardly-extending projections 9, designed to take into the notches f of the annulus D, and the inwardly-extending projections h to take into the grooves c of the bolt, and it is also provided upon its outer face with the beveled pawls These pawis i are designed to engage the ratchetteeth j upon the inner side of the nut G, and it will be seen that while they will permit of the nut being turned upon the bolt to the position desired they will effectually lock. and prevent rotation of the nut in the opposite direction.

In assembling the parts of my improved Y nut-lock the bolt is first passed through the registered apertures of the rail A and fishplates B, as shown, and the annulus D, spring E, and washer 1 are then placed on the bolt in the order named, the inwardly-exte-riding projections of the annulus and the washer being arranged in the grooves of the bolt, so as to fix them against turning thereon, and the spring being arranged within the flange of the annulus, so that it will be protected thereby. The nut is then placed on the bolt and turned to the position desired, when it will be seen that the spring will press the washer outwardly and by-holding the pawls '11 in engagement with the ratchet-teeth will effectually lock and prevent turning of the nut in the opposite direction.

\Vhen it is desired to remove the nut from thebolt, a fork-shaped implement H, (see Fig. 7,)having beveled or wedge-like prongs, may be interposed between the nu tand washerl so as to disengage the washer from the nut, when said nut may be readily turned off. the bolt. 7

It will be observed that in virtue ol' the construction described in the foregoing the parts of my improved nut-lock may be very quickly and easily assembled and lixed against turning on the bolt without the aid i :I uv implement, and it will also be observed that the nut is positively locked against turning in the direction that carries it oil. the bolt, it being turned in such direction to disengage the Washer from the nut in the manner described.

My improvements are designed and adapt ed to securely connect the parts of various kinds of machinery and are also highly useful in bridge-building and other connections, and I therefore desire it understood that I do not confine myself to using the same in conjunction with railway-rails and fish-plates to connect the same.

It will be observed that my improvements are very simple, and also that a connection of two devices may be effected and the nut securely locked without the employment of any implement other than a common nutwrench, which is an important advantage.

Having described my invention, 'what I claim, and desire to secure by Letters Patent, 1s

In a nut-lock, the combination of two devices to be connected, a threaded bolt extending through said devices and having a longineeessary before the nut can be opposite points with notehesf, a coiled tudinal groove, the annulus arranged on the bolt and having an inwardly extending projection entering the groove of the bolt and also having the marginal flange provided at spring surrounding the bolt and arranged within the flange of the annulus, the washer I arranged on the bolt against the spring and having radially-extending projections arranged in the notches of the annulus and an inwardly-extending projection arranged in the groove of the bolt and also havinga beveled pawl 011 its outer side and the nut arranged on the bolt and having the ratchet-teeth at its inner side adapted to be engaged by the pawl of the washer, said teeth being provided with beveled faces and square ends all substantially as and for the purpose described.

In testimony whereof I aiiix my signature in presence of two witnesses.

AR'llI UR MIREAULT. \Vitnesses:

II. MURPHY, J. I). Marlin. 

